Niacinamide was one of the first skincare products I ordered from DECIEM’s The Ordinary, and over the course of about four months, I used up a full 30 mL bottle.
The product’s full name is Niacinamide 10% + Zinc 1% High-Strength Vitamin and Mineral Blemish Formula, and it is meant to fade blemish spots, reduce skin congestion, and brighten skin tone.
Here is DECIEM’s description of the product:
Niacinamide (Vitamin B3) is indicated to reduce the appearance of skin blemishes and congestion. A high 10% concentration of this vitamin is supported in the formula by zinc salt of pyrrolidone carboxylic acid to balance visible aspects of sebum activity.
Contraindications: If topical Vitamin C is used as part of skincare, it should be applied at alternate times with this formula (ideally Vitamin C in the PM and this formula in the AM). Otherwise, Niacinamide can affect integrity of pure-form Vitamin C (L-Ascorbic Acid).
Notes: While Niacinamide and Zinc PCA reduce the look of blemishes and balance visible sebum activity, neither is a treatment for acne. For persistent acne-related conditions, we recommend the use of Benzoyl Peroxide and/or Retinoic Acid. DECIEM doesn’t recommend ongoing use of BHA such as Salicylic Acid for persistent blemishes. For temporary improvement in appearance of blemishes, Salicylic Acid would help. This formulation can be used alongside acne treatments if desired for added visible skin benefits.
Independent studies suggest Niacinamide is also an effective ingredient for brightening skin tone.
As per instructions, I did not use any Vitamin C with Niacinamide; other studies have suggested that use of these two in conjunction on the skin may not be a problem—for example, the TIA’M Vitamin C serum I am using at the moment actually contains niacinamide, as well!). However, I wasn’t introducing any Vitamin C to my skincare routine at the time I was trying out the Niacinamide, so I did follow DECIEM’s recommendation by default.